The scandium-rich indide Sc50Pt13.47In2.53
Author:
Gulay Nataliya L.1, Kösters Jutta2, Kalychak Yaroslav M.1, Pöttgen Rainer2
Affiliation:
1. Department of Analytical Chemistry , Ivan Franko National University of Lviv , Kyryla i Mefodiya Street 6 , 79005 Lviv , Ukraine 2. Institut für Anorganische und Analytische Chemie , Universität Münster , Corrensstrasse 30 , 48149 Münster , Germany
Abstract
Abstract
The scandium-rich indide Sc50Pt13.47In2.53 was obtained by induction melting of the elements and subsequent annealing. The structure of Sc50Pt13.47In2.53 has been refined from single-crystal X-ray diffractometer data: Fm
3
¯
$\overline{3}$
, a = 1774.61(3) pm, wR2 = 0.0443, 1047 F2 values and 35 variables. Sc50Pt13.47In2.53 is isopointal with the intermetallic phases Sc50Co12.5In3.5, Sc50Rh13.3In2.7, Sc50Ir13.6In2.4, Ag7+xMg26−x and Ga4.55Mg21.85Pd6.6 (Pearson code cF264 and Wyckoff sequence ih
2
fecba). Two of the eight crystallographic sites in the structure show mixed occupancies: M1 (≡Pt20.70In10.30) and M2 (≡Pt30.76In20.24). The structure contains four basic polyhedra: M2@Sc8 cubes, Pt1@Sc10 sphenocorona and slightly distorted M1@Sc12 and In3@Sc12 icosahedra. The polyhedra are condensed via common scandium corners and edges. The various Sc–Sc distances range from 302–334 pm and are indicative of substantial Sc–Sc bonding, stabilizing the Sc50Pt13.47In2.53 structure.
Funder
Deutscher Akademischer Austauschdienst
Publisher
Walter de Gruyter GmbH
Subject
General Chemistry
Reference41 articles.
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